Question 144
Simplify the expression:
$$
2\left(x y^{-1}-1\right)^{-p}\left(x^{2} y^{-2}-1\right)^{p}-\left(\frac{x+y}{y}\right)^{p}
$$
Compute the value of the expression for $x=-2$, $y=-\frac{1}{2}$ and $p=-3$.
$$
2\left(x y^{-1}-1\right)^{-p}\left(x^{2} y^{-2}-1\right)^{p}-\left(\frac{x+y}{y}\right)^{p}
$$
Compute the value of the expression for $x=-2$, $y=-\frac{1}{2}$ and $p=-3$.